Elemental content of predigested liquid protein products

Area of Science:

• Nutritional Science
• Analytical Chemistry

Background:

• Partially digested gelatin liquid products are marketed for weight reduction and protein supplementation.
• The elemental composition of these products is not well-documented.

Purpose of the Study:

• To analyze the elemental composition of eight commercially available partially digested gelatin liquid products.
• To assess the adequacy of these products as a sole source of nutrients.

Main Methods:

• Dry ashing and wet digestion techniques were employed for sample preparation.
• A variety of analytical methods were used, including ICP-AES, AAS, hydride generation, ASV, and ISE.
• Specific elements analyzed included Ca, Mg, P, Fe, Zn, Cu, Mn, Na, K, Se, As, Cd, Pb, and F.

Main Results:

• The content of most analyzed elements was significantly lower than recommended daily allowances and typical dietary intakes.
• Several elements (Mo, V, Be, Co, Cr, Tl, Al, Te, Sn, Sb) were not detectable in significant amounts.
• Products contained insignificant amounts of nonessential toxic elements like Ce and Pb.

Conclusions:

• These partially digested liquid protein products provide an inadequate intake of essential elements when used as a sole nutrient source.
• Consumers should be aware of the low elemental content and potential nutritional deficiencies.